Age - 20's
At your age Indonesia is the best from what I can say and Macau the worst. Many aged 20-30 complain that Macau is too boring to live, but you must go and see the place for a holiday.
Sexual preference - straight
According to some of the guys that work for the biggest football syndicate in the world and have other preferences too Thailand is the best. Though I heard that some now have AIDS, are in prison or both. Plus that they have started a crackdown on internet gambling there. Personally I avoid that country at all costs.
Bankroll - six figure
As soon as it hits 7 figures you may want to become a bit more careful in Indonesia, if you will have to expose it in some way. And you will the moment that you are dealing with those that will give you large credit on the football.
Food preference - Chinese
Chinese you can eat all over Asia and is not necessarily better in China.
Language - English, Spanish, etc. (asian - none)
If you do not speak any Chinese and have difficulties in learning languages, then you should not go to any Chinese speaking country (China, HK, Macau or Taiwan). My first step in Asia was in HK and after 4 years I spoke less Cantonese than Bahasa Indonesia after one month. At your age you can still learn another language and a country becomes much more enjoyable the moment you speak the language.
Recently there is only one big minus about Indonesia and that is that you will have to buy a visa to get in. In the old days one got 60 days 'without questions', but now they have started to make things difficult. Personally I used it a bit as one of the reasons why I left the place, but there are solutions for it.
entropy and cecil may have some useful input on the Philippines. I do not know that place very well.